{"id":"c-pdt","safety":{"commonSideEffects":[{"rate":null,"effect":"Phototoxicity/photosensitivity"},{"rate":null,"effect":"Erythema"},{"rate":null,"effect":"Edema"},{"rate":null,"effect":"Pain or burning at treatment site"},{"rate":null,"effect":"Crusting or scaling"}]},"_chembl":{"chemblId":"CHEMBL5595869","moleculeType":null,"molecularWeight":"458.64"},"_dailymed":null,"mechanism":{"_ai_source":"anthropic-haiku","explanation":"Photodynamic therapy (PDT) involves administration of a photosensitizer that accumulates in target tissues, followed by light activation at a specific wavelength. This activation generates singlet oxygen and other reactive oxygen species that cause direct cell death and vascular damage. 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